Iraq has formally called
on the US to launch air strikes against jihadist militants who have
seized several key cities over the past week.

"We have a request from the Iraqi government for air power,"
confirmed top US military commander Gen Martin Dempsey in front of US
senators.
Earlier the Sunni insurgents launched an attack on Iraq's biggest oil refinery at Baiji north of Baghdad.
Iraqi PM Nouri Maliki earlier urged Iraqis to unite against the militants.
Government forces are battling to push back ISIS (Islamic
State in Iraq and the Levant) and its Sunni Muslim allies in Diyala and
Salahuddin provinces, after the militants overran the second city, Mosul, last week.
US President Barack Obama is due to discuss the Iraq crisis with senior Congress members on Wednesday.
Ahead of the meeting Senate leader Harry Reid, a Democrat,
said he did not "support in any way" getting American troops involved in
the Iraqi "civil war".
But Gen Dempsey told a Senate panel that it was in America's "national interest to counter [ISIS] wherever we find them".